Question: What are the astronomical object type  which start with the letter v
Paraphrase: What are the cosmic question sort which begin with the letter v
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q17444909 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'v')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: variable star, variable star, V361 Hydrae variable, V361 Hydrae variable, V Sagittae variable, V Sagittae variable, very red source, very red source, variable star with rapid variations, variable star with rapid variations, void, void, variable nebula, variable nebula